This USB kit brings most conveniece for your necessity, include below tools:

1.USB numeric keypad
2.mini USB optical mouse
3.USB A/M TO B/M connector
4.USB A/M TO mini 5P/M connector
5.DC3.5 earphone
6.RJ45 TO RJ45 USB A/F 2.0 cable
7.USB A/M TO USB A/F 2.0 cable
8.23in 1card reader high speed usb2.0
9.USB LED Light